1. Institute of Neuroscience and Physiology, Department of Neurosurgery, the Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
2. Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
3. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.
4. Department of Molecular Neuroscience, UCL Institute of Neurology, Queen Square, London, United Kingdom.
5. Department of Neuroradiology, Institute of Clinical Sciences, the Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.